Active Noise Cancellation (ANC) cancels the noise you don’t want to hear; HearThrough (our word for transparency mode) lets in the sounds you do. With 11 levels of sound - from full ANC to full HearThrough – perfectly engineered for the way your ear perceives changes in volume, you’ll never miss a beat. The Elite 85t buds have been engineered with the most cutting-edge noise cancellation technology on the market, to give you complete control over how you hear the world around you.